This matchup is a race: they have almost no interaction for our combo (no counterspells, minimal instant-speed removal) but can also kill us with Urza's Saga/Eldrazi ramp. Stern Scolding and Spell Snare are weak since their early plays (Blade of the Bloodchief, Ancient Stirrings) don't die to them or aren't relevant targets. Engineered Explosives at X=0 or X=1 cleans up Eldrazi Spawn tokens and Ancient Stirrings hate pieces like Vexing Bauble; Tormod's Crypt answers their graveyard-based Malevolent Rumble value and blunts Shifting Woodland/Emrakul plans somewhat. Prioritize goldfishing fast — most of their deck is proactive, not interactive.

Izzet Prowess is entirely creatures and burn with almost no noncreature spells worth Force of Negation, making it a dead card here; Consign to Memory is excellent since it counters their colorless Mishra's Bauble and any triggered abilities, and its Replicate lets us stop multiple threats at once. The extra Spell Snare picks off Cori-Steel Cutter and Expressive Iteration. Their deck can't fight our combo directly, so the main risk is dying to burn before we assemble Charbelcher — prioritize speed and use Consign to Memory defensively only when necessary.

Esper Blink brings heavy discard (Thoughtseize) and efficient interaction (Solitude, Orcish Bowmasters, Fatal Push) that can strip our hand or eat our combo pieces, so we need maximum density of protection. Mystical Dispute is live against their blue cards like Consign to Memory and Teferi, Time Raveler, while Spell Snare picks off Phelia, Exuberant Shepherd and Orcish Bowmasters. Stern Scolding is too narrow against their bigger threats (Solitude, Overlord of the Balemurk), so we cut it for broader disruption. Consign to Memory stops Orcish Bowmasters and Emperor of Bones triggers as well as any colorless spells they might sideboard in.